Category: Systèmes d’exploitation

The Mac App Store–what could this mean for the Apple Macintosh platform?

Mac App Store launching in January sans Game Center and in-app purchases? | Engadget

My Comments

At the moment, Apple Macintosh users can buy software in a packaged form from any store that sells software for this platform. As well, they can download software from various Websites, including the developers’ own Websites and run this software on their computers.

Now Apple is introducing the Mac App Store as an extension of the iTunes App Store that is the only way to get extra software for any iOS device (iPhone, iPod Touch or iPad) for the Macintosh desktop. The main question I have about this is whether this App Store will exist simply as another storefront for MacOS X software where such software can be purchased with the iTunes gift cards or a regular credit card or as a move by Apple to make this storefront the only way for MacOS X users to add software to their computers?

There has been controversy about the App Store in relation to the iOS platform over the last few years because it allowed Apple to have greater control over the software that could run on that platform. Situations that came about included outlawing Adobe Flash on the iOS platform and prohibiting the supply of software that Steve Jobs didn’t see fit like Wi-Fi site-survey tools for example. I had talked with some friends of mine who were regular Mac users and they feared that if Apple set up the App Store on the Macintosh platform, it could become the start of a situation where you can’t load applications on a Mac unless they came through the App Store.

What I would like to see of the Mac App Store is that it exists as another storefront and “download city” for Macintosh-platform software and that MacOS developers can maintain their own sites and distribution channels for such software. It should then keep the Macintosh platform a flexible desktop-computing platform with the expectations of this class of platform rather than a desktop version of the Apple iOS embedded-computing platform.

Another major change for the Intel-based PC platform will shorten the boot-up cycle

News articles

Getting a Windows PC to boot in under 10 seconds | Nanotech – The Circuits Blog (CNET News)

BBC News – Change to ‘Bios’ will make for PCs that boot in seconds

My comments

The PC BIOS legacy

The PC BIOS which was the functional bridge between the time you turn a personal computer on and when the operating system can be booted was defined in 1979 when personal computers of reasonable sophistication came on the scene. At that time the best peripheral mix for a personal computer was a “green-screen” text display,  two to four floppy disk drives, a dot-matrix printer and a keyboard. Rudimentary computers at that time used a cassette recorder rather than the floppy-disk drives as their secondary storage.

Through the 1980s, there was Improved BIOS support for integrated colour graphics chipsets and the ability to address hard disks. In the 1990s, there were some newer changes such as support for networks, mice, higher graphics and alternate storage types but the BIOS wasn’t improved for these newer needs. In some cases, the computer had to have extra “sidecar” ROM chips installed on VGA cards or network cards to permit support for VGA graphics or booting from the network. Similarly, interface cards like SCSI cards or add-on IDE cards couldn’t support “boot disks” unless they had specific “sidecar” ROM chips to tell the BIOS that there were “boot disks” on these cards.

These BIOS setups were only able to boot to one operating environment or, in some cases, could boot to an alternative operating environment such as a BASIC interpreter that used a cassette recorder as secondary storage. If a user wanted to work with a choice of operating environments, the computer had to boot to a multi-choice “bootloader” program which was a miniature operating system in itself and presented a menu of operating environments to boot into. This was extended to lightweight Web browsers, email clients and media players that are used in some of the newer laptops for “there-and-then” computing tasks.

The needs of a current computer, with its newer peripheral types and connection methods, were too demanding on this old code and typically required that the computer take a significant amount of time from switch-on to when the operating system could start. In some cases, there were reliability problems as the BIOS had to get used to existing peripheral types being connected to newer connection methods, such as use of Bluetooth wireless keyboards or keyboards that connect via the USB bus.

The Universal Extensible Firmware Interface improvement

This is a new improvement that will replace the BIOS as the bootstrap software that runs just after you turn on the computer in order to start the operating system. The way this aspect of a computer’s operation is designed has been radically improved with the software being programmed in C rather than machine language.

Optimised for today’s computers rather than yesterday’s computers

All of the computer’s peripherals are identified by function rather than by where they are connected. This will allow for console devices such as the keyboard and the mouse to work properly if they are connected via a link like the USB bus or wireless connectivity. It also allows for different scenarios like “headless” boxes which are managed by a Web front, Remote Desktop Protocol session or similar network-driven remote-management setup. That ability has appealed to businesses who have large racks of servers in a “data room” or wiring closet and the IT staff want to manage these servers from their desk or their home network.

Another, yet more obvious benefit is for computer devices to have a quicker boot time because the new functions that UEFI allows for and that the UEFI code is optimised for today’s computer device rather than the 1979-81-era computer devices. It is also designed to work with future connection methods and peripheral types which means that there won’t be a need for “sidecar” BIOS or bootstrap chips on interface cards.

Other operational advantages

There is support in the UEFI standard for the bootstrap firmware to provide a multi-boot setup for systems that have multiple operating environments thus avoiding the need to provide a “bootloader” menu program on the boot disk to allow the user to select the operating environment. It will also yield the same improvements for those computers that allow the user to boot to a lightweight task-specific operating environment.

When will this be available

This technology has been implemented in some newer laptops and a lot of business-class servers but from 2011 onwards, it will become available in most desktop and laptop computers that appeal to home users and small-business operators. People who have their computers built by an independent reseller or build their own PCs will be likely to have this function integrated in motherboards released from this model year onwards.

Comprendre l’écrans «Choix de Navigateur» – Mis à jour

Articles du Presse

Microsoft offre un choix navigateur Web pour les utilisateurs d’IE | BBC Technology (Royanne-Uni – Anglais)

Microsoft s’apprête à offrir aux utilisateurs de Windows un écran de choix du navigateur | The Guardian Technology Blog (Royanne-Uni – Anglais)

La concurrence entre navigateurs web relancée en Europe | DegroupNews (France)

De la bouche du cheval

Le navigateur de choix d’écrans pour l’Europe: à quoi s’attendre, quand l’attendre | Microsoft sur les enjeux (Microsoft – Anglais)

MIS À JOUR: Le navigateur de choix d’écrans pour l’Europe – Les enjeux de Microsoft (Microsoft – Anglais)

Union européenne communiqué de presse sur l’écran Choix du navigateur

Le raccourci d’écran de choix des navigateurs (disponible partout dans le monde)

 http://browserchoice.eu

 Site de plaidoyer

OpenToChoice.org (Mozilla)

Mes commentaires et informations complémentaires

Si vous exécutez une version de Windows XP, Vista ou 7 que vous avez achetés en Europe et votre navigateur par défaut est Internet Explorer 8, vous mai être tenus de remplir un navigateur “sélection” écran scrutin, connu sous l’écran “Choix du navigateur”, afin de déterminer dont le navigateur de votre ordinateur doit exécuter comme navigateur par défaut. Mai il ne se produira pas si vous avez exécuté un autre navigateur comme navigateur par défaut, puis revient à Internet Explorer 8. Il a également qu’il adviendra de migrants européens qui ont apporté leurs ordinateurs de Windows avec eux.

Vous aurez à travailler à travers un “assistant” qui a un écran d’introduction, puis la liste des navigateurs présentés dans un ordre aléatoire.  Donc quand vous choisissez ce navigateur, il sera déterminé comme votre par défaut l’outil de navigation Web chaque fois que vous passez à une page Web. Si le navigateur n’est pas installé sur votre ordinateur, le logiciel va être téléchargé depuis le site du développeur et installés sur votre système.

Si vous exécutez Windows 7, Internet Explorer «e» logo disparaît de la barre des tâches, mais vous pouvez toujours le trouver dans votre menu Démarrer. Ensuite, vous serez en mesure de le rattacher à votre barre des tâches en cliquant droit sur le programme dans le menu Démarrer et en sélectionnant “Pin à la barre des tâches”.

L’écran “Choix du navigateur” deviendra par la suite disponible comme une autre méthode pour changer les navigateurs par défaut, à côté des options disponibles lorsque vous installez, mettez à jour ou de lancer un navigateur Web.

Il ya certaines questions que vous exécutez en mai si vous passez de Internet Explorer 8 à un autre navigateur.L’une est que vous n’aurez pas vos flux RSS qui s’est tenue à la liste de flux commun qui fonctionne en tant que partie de Windows Vista et 7.  Cette mai affecter l’ajout d’aliments nouveaux destinés à des logiciels qui font usage de la liste de flux commun que leur magasin de données RSS.  De même, Windows 7 utilisateurs ne bénéficieront pas d’avoir les onglets visibles dans plusieurs fenêtre d’aperçu «Aero Peek». Cette question mai être résolu avec les versions des navigateurs alternatifs en cours de construction à travailler étroitement avec des caractéristiques de l’hôte système d’exploitation, qui peut être réalisé avec la programmation d’application Windows informations sur les interfaces mises à disposition par Microsoft.

À l’heure actuelle, il n’est pas un programme qui ajoute des navigateurs installés dans le menu contextuel lorsque vous cliquez-droit sur un lien Web.  Un tel programme pourrait bénéficier les développeurs Web et des blogueurs qui veulent tester une page sous différents navigateurs ou les personnes qui veulent «répandre la Web-charge de la visualization» parmi les différents clients.

Recommandations d’Auteur (sans ordre particulier)

Je recommande aucun de ces navigateurs car les utilisateurs n’ont pas besoin de réapprendre l’interface utilisateur si elles basculer entre aucun d’eux.

Mozilla Firefox

Internet Explorer

Opera

Safari